Hitachi dp 5x schematic
HITACHI
PROJECTION
May 2006 (ver b)
TELEVISION
2005 MODEL RELEASE
DIGITAL HD READY PTV
Model Chassis Remote P/N
51F710A
57F710A
65F710A
51F710R
57F710R
DP-55 CLU-4351UG2 HL02072
DP-55 CLU-4351UG2 HL02072
DP-55 CLU-4351UG2 HL02072
DP-57 CLU-4351UG2 HL02072
DP-57 CLU-4351UG2 HL02072
Service Web Site
CONTENTS... 2006 DP-5X Chassis Projection Television Information
http://www.hitachiserviceusa.com
Materials Prepared by… Alvie Rodgers C.E.T. (Chamblee, GA.)
DP-5X BLANK PAGE “USE FOR NOTES”
BLANK PAGE
May 2006 (ver b)
TOPICS PAGE
SECTION (1) POWER SUPPLY DIAGRAMS:
DP-5X TABLE OF CONTENTS
• Deflection B+ 115V Regulation Circuits Diagram ------------------------------------------------- 01-01
• PROTECT_O VP Sh ut do wn Block Diagram ------------------------------------------------------ 01-02
• PROTECT_OVP (A) Shutdown Circuit Diagram ------------------------------------------------ 01-03
• PROTECT_OVP (A to B) Shutdown Circuit Diagram ------------------------------------------ 01-04
• PROTECT_OVP (B to C) Shutdown Circuit Diagram ------------------------------------------ 01-05
• PROTECT_O CP Sh ut do wn Circuit Diagram ----------------------------------------------------- 01-06
• PROTECT_OVP (C) Shutdown Circuit Diagram ------------------------------------------------ 01-07
SECTION (2) VIDEO CIRCUIT INFORMATION:
• Video Signal Selection Circuit Diagram ------------------------------------- ----------- ------------ 02-01
• Video Signal from Di gital Module Circuit Diagram ---------------------------------------------- 02-02
• Video Mute Circuit Diagram -------------------------------------------------------------------------- 02-03
• ABL Circuit Explanation ------------------------------------------------------------------------------- 02-04
• ABL Circuit Di agram ----------------------------------------------------------------------------------- 02-05
SECTION (3) AUDIO CIRCUIT INFORMATION:
Materials prepared by
Alvie Rodgers C.E.T.
• Audio Signal Selection Circuit Diagram ------------------------------------------------------------ 03-01
• Audio Mute for Output Section Circuit Diagram ------------------------------------------------- 03-02
• Audio Mute for Monitor Out Circuit Diagram ---------------------------------------------------- 03-02
SECTION (4) DEFLECTION CIRCUIT:
• Sweep Loss Detection Circuit Diagram -------------------------------------------------------------- 04-01
SECTION (5) DIGITAL CONVERGENCE CIRCUIT INFORMATION:
• Digital Convergence Interconnect Circuit Diagram ---------------------------------------------- 05-01
• CLU-4351UG2 Remote Control ---------------------------------------------------------------------- 05-02
• CLU-3842WL Re mote Control ----------------------------------------------------------------------- 05-03
• Remote into DCAM Explanation -------------------------------- -------------------- ---------------- 05-04
• Service Only Switch Location ----------------------------------- ------------------ ------------------ 05-05
• Accessing the Service Only Switch ------------------------------------------------------------------ 05-06
• Entering DCAM via Magic Focus -------------------------- -------------------------------- --------- 05-07
• 51” Overlay Grid Dimensions and Part Number ----------- ------- ------- ------- ---- ------- ------- 05-08
• 57” Overlay Grid Dimensions and Part Number ----------- ------- ------- ------- ---- ------- ------- 05-09
• 65” Overlay Grid Dimensions and Part Number ----------- ------- ------- ------- ---- ------- ------- 05-10
• Magic Focus Tune Up via the Customer’s Menu -------------------------------------------------- 05-11
Continued on Next Page
Table of Contents Page 1 of 2
May 2006 (ver b)
This Section Must be Downloaded separately, as it's contents change frequently.
TOPICS PAGE
SECTION (6) CHASSIS PICTURES:
DP-5X TABLE OF CONTENTS
• Main Chassis Picture ----------------------- ------------------------------------------- ---------------- 06-01
• Power PWB and Control PWB Pictures ---------------------------------------------------------- 06-02
• Signal PWB Picture ------------------------------------------------------------------------------------ 06-03
• Deflection PWB Picture ------------------------------------------------------------------------------- 06-04
• Digital PWB and CRT PWB Pictures -------------------------------------------------------------- 06-05
• Rear Audio / Video Input-Output Panel, Front Inputs and Remote Control -------------- 06-06
SECTION (7) TROUBLESHOOTING:
• Signal Power Supply Voltage Check ---------------------------------------- ----------------------- 07-01
• Deflection Power Supply Voltage Check ------------------------------------- --------------------- 07-02
Materials prepared by
Alvie Rodgers C.E.T.
• Confused DCU Crosshatch --------------------------------------------------------------------------- 07-03
• No DCU Crosshatch ----------------------------- ---------------------- ------------------------- ------- 07-04
• CRT Phosphor Burn Prevention -------------------------------------------------------------------- 07-05
SECTION (8) KEY PARTS
• Key Component Parts List ------------------------------------------- -------------------------------- 08-01
• PWBs, CRTs, Screen, Screen Frames, Tuner Part Numbers --------------------------------- 08-03
SECTION (9) THINGS YOU SHOULD KNOW:
• See the index for this section after the Section 9 Divider. -------------------------------------- 09-00
Table of Contents Page 2 of 2
POWER SUPPLY
INFORMATION
DP-5X
CHASSIS INFORMATION
SECTION 01
DP-5X BLANK PAGE “USE FOR NOTES”
BLANK PAGE
TP01
DP-5X CHASSIS POWER SUPPLY SW +115V REGULATION
High Voltage Power Supply
9
7.5P/P
8
1 of 3
Supplied from Relay S903
AC Supplied from
Relay S903
Raw B+ from DP01 Pin 1
150V
FP01
AC
From LP06 pin 4
CP07
TP01
1
2
5A
DP02
163.6V
RP02RP01
Start Up
19.3V
Output IC
3 2
DS
RP11
4
VIn
OCP/FB
IP01
Driver/
Gnd
5
Run
Osc B+
1
RP09
RP05
0.05
DP03
2.3V
RP10
CP09
DP04
QP01
RP12
DP05
B+ 115V
Hot Ground from
pin 8 of TP01
FB
19.3V
4.4V
RP14
IP02
4
3
Regulator
Photocoupler
IP40
1 2
12V
11.3V
1
RP51
2
10.4V
11.2V
DP53
TP01
17
16
3 of 3
CP45
DP46
CP51
2 of 3
CP59
X-Ray
Protect
5
6
QP41
RP47
0.39
DP55
DP56
DP57
RP49
EP46
0.5K
3K
EP45
RP48
DP58
RP55
Deflection
B+ 115V
RP54
DP59
LP47
3
0.85A
SW +115V
Cold Ground from
pin 16 of TP01
CP01
Page 01-01
DP-5X PROTECT-OVP SHUTDOWN BLOCK DIAGRAM
Signal Power
Sheet 14
From QJ06
RE35 Current Sensor
VM 220V
Over Current Det.
PPT3
10.5V
Turns on Relay S902
3
D950
10.5V Too High Det.
Activated De t .
To Q943
DJ14
Prot-OCP
Power 1
D990D988
PPT3
Turns on Relay S901
Signal Power
Sheet 14
7
C
RJ16
To Q942
Power 3
Q980
AC Too High Det.
< Protect >
< Prot >
10.5V Loss Det.
D951
D959
DJ09
PPT3
2
From Q901 / I905
Signal Power
Sheet 14
From QJ02
DM/Power/IF
Sheet 4
QE08
ERG1
7
AB
< VM Port > < CRT Prot >
Green
Red CRT
Sheet 12
CRT
Sheet 11
RP40
Def + 28V
DP48
Def - 28V
RP41
From Voltage Divider
RP54, RP55 off
Def. +115V
Current Sensor RP47
From QP41 off
Def. +115V
Deflection Power
Sheet 15
VM Overcurrent
Detection
PCT
DX15
3
RGB Processor
Sheet 6
DP60
Def -28V Loss
Detection
Excessive Def. B +
Detection
DP56DP55
Excessive Def. B +
Current Detection
< Prot-OVP > < Prot-OVP >
B
1
PDT3
DP61
R632
A
DP57DP58
High Voltage Det.
-5V Loss Detection
DC33
-5V Loss Det.
DC/DEF/IF
Sheet 7
D608
Vert. 26V
Overcurrent Det .
DH15
Excessive
RC51
+ 5V
- 5V
RC50
From Q604
and Current Sensor
R609
From DH13, CH17
off Pin 7 of Flyback
Deflection
Sheet 17
PAGE 01-02
CP45
TP01
DP46
17
CP51
16
Deflection B+ (115V)
Excessive Current Det.
CP59
DP-5X PROTECT-OVP (A) DIAGRAM
EP46
500
3K
EP45
RP54
RP55
QP41
RP47
0.39 Ohm
RP48
DP55
RP49
DP58
Deflection B+ 115V
Def +115V
Deflection B+ (115V)
Excessive Voltage Det.
DP59
TP01
TP01
13
15
14
10K
EP41
10K
EP40
RP53
SW-28V Short or Loss Det.
CP41
DP42
CP47
CP40
DP40
CP46
CP63
DP48
RP40
-
+
LP40
+
RP46
DP56
D926
LP41
CP52
1
CP53
Def 7.5V
2
A
RP41
-
+
+
-
DP60
DP61
QP40
3
PROT-OVP
2000
EP47
LP43
LP42
LP46
See Protect-OVP (A to B)
Shutdown Circuit Diagram
for continuation.
0.65A
1.26A
PDC1
3
0.69A
SW -28V
KPGnd
SW +28V
Def 6.3V
DP50
DP51
PAGE 01-03
DP-5X PROTECT-OVP (A to B) SHUTDOWN DIAGRAM
RH32 allows ABL fluctuations to
manipulate the Trigger Point of Shut
Down as screen brightness varies. ABL
is inverse proportionate to brightness.
This prevents false triggering.
Vertical Output Circuit
I601
Vs
10
L603
C604
Q604
ABL
Excessive Hi
Def +28V
R629 0.68 Ohm
Voltage Det.
ABL Voltage
Too High Det.
LH01
RH21
RH32
RH24
DH15
1
3
A
Flyback
TH01
8
RH25
< Prot-OVP >
High Voltage
Sensing Circuit
5OP
RH23
LH06
DH13
RH26
DH14
77
OVP
1
Stops H. Drive
29.01V
CH17
Any fluctuations in High Voltage will
also be reflected by the 50P output P/P.
By monitoring the 50P (50 Pulse) rises
in High Voltage will be sensed. If High
Voltage climbs too high, DH15 will fire
and trigger a shut down event.
See Protect-OVP (A)
Shutdown Circuit Diagram
for Inputs.
Hi Volt
H. Drive
IH01
R630
C610
Excessive Vertical
Current Det .
If the Vertical Output IC has a problem,
R629 will sense the current rise. The
voltage drop will be reflected at the base
of Q604 turning it on and producing a
Shut Down high.
R631
D608
R632
1
Deflection Sheet 17
PDT3
1
Active
Normal
5
B
< Prot-OVP >
See Power Supply Shut Down
Circuit Diagram for continuation.
See Protect-OVP (B to C)
Shutdown Circuit Diagram
for continuation.
PAGE 01-04
DP-5X PROTECT-OVP (B to C) SHUTDOWN DIAGRAM
Active
Normal
< Prot-OVP >
See Protect-OVP (A to B)
Shutdown Circuit Diagram
for inputs.
CRT +220V Excessive
Current Detection
PDC1
Def
+220V
1
CE10
From Deflection
Sheet 17
5
B
RED CRT PWB Sheet 12
RE35
2.2 Ohm
QE08
RE29
PDT3
1
To CRT 220V
To VM Circuit
RE31
RE34
VM PORT
15
< Prot-OVP >
6
GREEN
CRT PWB
Sheet 11
ERG1
A B
7
VM PORT
PCT
3
CRT PROT
-5V Loss Detection
< Prot-OVP >
DX15
1
DC33
-5V Loss Det.
On DC/DEF/IF Sheet 7
7
RGB
Processor
Sheet 6
RC51
+ 5V
- 5V
RC50
RJ16
DJ16
QJ06
Def + 7.5V
See Protect-OCP Shutdown Circuit
Diagram for Inputs
From DC/DEF-I/F
Sheet 7
From RGB Processor
< Prot-OCP > < Prot-OCP >
2
DJ04
RJ32
RJ31
DJ15
RJ3O
DJ06
CJ08
OVC Activated
Detection
DJ15
Sheet 6
DJ09
QJ02
RJ18
RJ19
Sig + 5.6V
PPT3
7
DJ08
RJ17
Sig +10.5 V Loss
Detection
CJ03
Normal
10
C
< Prot-OVP >
See Protect-OVP (C)
Shutdown Circuit Diagram
for Continuation.
Sig + 10.5V
RJ08
CJ04
DJ07
From DM/POWER/I/F
Sheet 4
Active
3
PAGE 01-05
DP-5X PROTECT-OCP DIAGRAM
1
< Prot-OCP >
RGB Processor
Sheet 6
Shuts Off VM
Driver Circu it
through QX20
QX26
RY13
RY14
CX58
VM Gain
Cont
Deflection +10.5V
Short Detection
On Deflection
Sheet 17
PCT
2
Green
CRT PWB
Sheet 11
Gain
Cont
D723
EGB1
8
Def 10.5V
Blue CRT PWB
Sheet 10
To VM Output
Circuit QEA6
CEC1
ba
REF6
Gain
Cont
PDT3
1
2
VM Excessive
Current Detection
15 Ohm
REF4
REF5
REE9
Def 10.5VDef 10.5V
0.15A
On Deflection Power
Sheet 15
On DC/DEF/IF
Sheet 7
REF1
QEA8
< Prot-OCP >
REF2
ERG2b
2
VM
+220V
On DM/POWER/IF
Sheet 4
DJ16
QJ06
DJ15
Def + 7.5V
2
RJ32
DJ15
RJ3O
OVC Activated
Detection
PROT-OVP
< Prot-OCP >
2
DJ04
RJ31
DJ06
CJ08
See Protect-OVP (B to C)
Shutdown Circuit Diagram
for continuation.
PAGE 01-06
DP-5X PROTECT-OVP (C) SHUTDOWN CIRCUIT
For
Signal
Power
Supply
D902
Relay
Driver
SBY +5V
AC
Q943
From Sub
Micro
Pin 20, Q021, Q025 Pin 81
Power 12Power 3
6
onoff
S90207
D941
R944
D946
D945
R941
From Digital
Module
onoff
R947R946
SBY +5V
D942
D958
S903
R943
D944
AC
2.2 ohm
F904
PPT3
PPT3
D940
Q942
R940
3
SBY +5V
S901
S904
D943
11 12 13
For
AC
Signal &
Deflection
Power
Supply
S902
S903
Relay
Driver
Audio B+
Audio
Vcc
Audio Vcc
See Protect-OVP (B to C)
Shutdown Circuit Diagram
AC
Hot
Ground
AC 175 On
Raw B+
D902
AC
for Inputs.
R924
R925
D915
9V
R927
C916
<PROTECT>
1
2
4
5
T902
(8.9V ~ 9.3V)
R926
C
7
Normal
10
Active
Page 01-07
D950
R980
Q980
R945
D951
C980
C981
To Sub Power
D948D947
Q981
R982
R981
12
R942
Q944
Relay
Driver
Q901
Sig +10.5V
Run B+ 16V
D988
D990
1
Excessive Sig +10.5V
Voltage Detection
I905
2
1 3
R923
D959
AC Voltage Too High
SBY 5V
4
1
10
Detection
DP-5X BLANK PAGE “USE FOR NOTES”
BLANK PAGE
VIDEO
INFORMATION
DP-5X
CHASSIS INFORMATION
SECTION 02
DP-5X BLANK PAGE “USE FOR NOTES”
BLANK PAGE
DP-5X CHASSIS VIDEO SIGNAL SELECTION PATH CIRCUIT DIAGRAM
Tuner Sheet 2
U301 Main Tuner
Sheet 13
Front Control PWB
V5
S5
V4
V3
TUNER
Aux 5 Video V3V
Aux 5 S-Y V3Y
Aux 5 S-C V3C
S-5 Det.
Component 4 Y
Composite 4
Component 4 Pb/Cb
Component 4 Pr/Cr
Component 3 Y
Composite 3
Component 3 Pb/Cb
Component 3 Pr/Cr
13
1 2
PFT
2
7
9
AV Selector Sheet 3
I401
Video Select
15
TV1_CV
65
V1
67
Y1
69
C1
S-1
CY2
V8
PB2
PR2
CY1
V7
PB1
PR1
SUB OUT
Y5 DM In
C5 DM In
7011
27
19
29
31
21
17
23
25
MAIN
OUT
Y
C Pb
C Pr
Y
SDA5
SCL5
Composite Video or S-Y
For Micro. CC detection
Main Y / V
Q407
Q408
56
Q409
55
Q410
54
Q403
60
Sub Y / V
See Sub Sync Signal Path
SD YO
11
NTSC for Monito Out
13
SD CO
45
46
See Main Sync Signal Path
PST
56
80
DM / Power / I/F
Sheet 4
Main Y/CV
Main Pb/C
Digital
Module
2
Main Pr
INCLUDES:
ATSC / QUAM Tuner
3D Y/C
PinP Section
HDMI Input
CableCard Input
48
49
54
53
Optical Audio Out
Flex Converter
SDA5
SCL5
V2
S2
PAGE 02-0 1
V1
S1
Aux 2 Video
Aux 2 S-Y
Aux 2 S-C
S-2 Det.
Aux 1 Video
Aux 1 S-Y
Aux 1 S-C
S-1 Det.
77
79
71
73
75
76
V3
Y3
C3
1
2
S-3
V2
Y2
MON OUT
C2
S-2
V Out 3
Y Out 3
C Out 3
51
52
50
For Continuation
of the Signal Flow
See Video Out Of the
Digital Module
Signal Diagram
Monitor Out Video
Monitor Out S-Y
Monitor Out S-C
MON
OUT
66
67
68
HD_Yo
HD_PBo
HD_PRo
DP-5X Chassis Video From The Digital Module Ci r cuit D iagr am
From
Video
Signal
Selection
Path
Signal
Diagram
PAGE 02-02
P
S
T
56
80
2
Main Y/C V
Main Pb/C
Main Pr
Digital
Module
INCLUDES:
ATSC / QUAM Tuner
3D Y/C
PinP Section
HDMI Input
CableCard Input
Optical Audio Out
Flex Converter
SDA5
SCL5
HD_Yo
HD_PBo
HD_PRo
P
S
T
54
53
66
67
68
Y
Pb
Pr
QX11
QX10
QX09
RAINFOREST I C
IX01
RGB
Processor
SDA5
28
SCL5
30
68
Cr1/Pr 1_In
67
Cb1/Pb 1_In
66
Y 1_In
R Out
G Out
B Out
12
13
14
SW+ 9.3V
RY25 RY27 RY28 CX64
RY26
CX63
RY24RY19
SW+ 9.3V
RY40 RY42 RY43 CX68
RY41
CX67
RY39RY34
SW+ 9.3V
RY55 RY57 RY58 CX72
RY56
CX71
RY54RY49
QX29
QX30
QX29
QX34
QX37
QX38
RY29
RY44
RY59
DX05
DX06
DX07
PCT
5
To
CPT
PWBs
7
To
CPT
PWBs
9
DM / Power / I/F
Sheet 4
RGB Processor
Sheet 6
DP-5X CHASSIS VIDEO MUTE GENERATION CIRCUIT DIAGRAM
DC/DEF/IF
Sheet 7
AC SIGNAL From
DM/POWER/IF Sheet 4
From QJ04
TO RGB PROCESSOR
Sheet 6
V_MUTE 1
TO AUDIO OUT
Sheet 5
V_MUTE 2
C
QC01
Sheet 9
Mutes Dig Conv.
IS07, IS05
Def +10.5V
DC32
RC12
RC14
DC16
QC05
RC11
B
RC13
CC04
From Sweep Loss
Detection Circuit
QC07 & QC12
QC04
AC Det
Normal Off
RES
A
CC02
Sheet 8
Mutes Dig Conv.
IT01
RC66
CC29
PDT3
Mute
QC17
RC65
CONV. OUT
Sheet 16
9
Mutes
Convergence
Outputs
DEFLECTION
Sheet 17
Shuts off IH01
High Voltage
Driver IC
SW +9.3V
QC02
RC06
RC02
DC14
RC07
CC02
QC03
RC08
DC15
AC Det
Prot HV
V Mute
V Mute
PDT2
4
Prot HV
RC03
PAGE 02-03
Digital
Module
V_MUTE
DM/POWER/IF
Sheet 4
AC Det = Loss of AC
Prot HV = Loss of H or V Sweep
6
D
V Mute = Channel Change, Power
Off/On, Auto Programming, etc..
DP-5X ABL CIRCUIT EXPLANATION
(See ABL Circuit Diagram on the next page for details)
The ABL voltage is generated from the Flyback transformer TH01 ABL pi n (8). The ABL pull-up resistors are
RH27 and RH28. They receive their pull up voltage from the SW +115V which is the B+ line for Deflection cre-
ated in the Power Supply.
ABL VOLTAGE OPERATION
The ABL voltage is determined by the current draw through the Flyback transformer. As the picture brightness
becomes brighter or increases, the demand for replacement of the High Voltage bei ng consumed is greater. In
this case, the Flyback will work harder and the current through the Flyback increases. This in turn will decrease
the ABL voltage. The ABL voltage is inversely proportionate to screen brightness.
Also connected to the ABL voltage line is DH16. This zener diode acts as a clamp for the ABL voltage. If the
ABL voltage tries to increase above 10.5V due to a dark scene which decreases the current demand on the flyback, the ABL voltage will rise to the point that DH16 dumps the excess voltage into the 10.5V line.
ACCL TRANSISTOR OPERATION
The ABL voltage is routed through the PDT2 connector pin 3 to the Signal PWB. Then the ABL voltage is
routed through the acceleration circuit RX45 and DX01 to the base of QX12. Under normal conditions, this transistor is nearly saturated. QX12 determines the voltage being supplied to the cathode of DX00, which is connected to pin 78 of the Rainforest IC, IX01. During an ABL voltage decrease due to an excessive bright circum-
stance, the base of QX12 will go down, this wi ll drop the emitter voltage which in turn drops the cathode voltage
of DX00. Thi s in turn will pull voltage away from pin 78 of the Rainforest IC, IX01. Internally, this reduces the
brightness, contrast and color gain voltage which is being controlled by the I
Microprocessor arriving at pins 28 and 30 of the Rainforest IC and reduces the overall brightness, preventing
blooming as well as reducing the Color saturation level to prevent color smear.
ABL SWITCH QH03 AND QH05
This chassis has the ability to change the Side Panels when watching a NTSC 4X3 image. When a 4X3 images is
displayed on a 16X9 set, the sides do not reach the edges. To avoid excessive ageing at the 4X3 display area, the
side panels IRE levels are raised. However, sometimes the customer may want to turn the side gray panels off.
Through the Video Advanced features Menu the customer can do this. When the Side panels are turned off, the
overall average ABL level for the image is reduced. To compensate, QH03 ABL Switch is turned on. The Microprocessor in the Digital Module tells the Sub Microprocessor IC I001 via I
from the DAC lines pin 88 or 89. This high is routed through the PPT2 connector, either pin 1 or 2, to the base
of QH03 or QH05 turning either one On. This adds either Resistor RH42 or RH43 to the ABL pull up circuit
and the ABL level drops slightly to compensate for the loss of brightness when the side panels go black.
2
C bus data communication from the
2
C communication to output a high
Black Side Panels
Turned on by the
customer
Gray Side Panels
Black Side Panels
RH32 manipulates the trigger point of shutdown dependant upon the ABL level avoiding false triggering.
NOTE: For the Circuit connected to the Xray Protect line, see the PROTECT-OVP (A to B) SHUTDOWN DIAGRAM for details on Page 01-04.
PAGE 02-04
DP-5X Chassis A.B.L. Circuit Diagram
ABL
DX01
RX44RX45
CX23
QX12
RX43
CX22
RX41
RX42
SW +9.3V
DX00
CX21
RX40
ABL
CX20
75
78
IX01
Rainforest
IC
SDA1
SCL1
28
30
I001
Sub
Micro
Signal PWB
Black Panel
89
ABL Switch
88
FBT
SW +115V
ABL_SW
BLACK_
PANEL
ABL switches slightly reduce the
overall operational point of ABL due
to the loss of overall brightness levels.
PDT2
RH30
1
RH35
RH41
2
RH40
RH43 180K
QH03
ABL Switch
RH33
2.2K
QH05
ABL Switch
RH42 47K
Clamp
RH27 24K DP-57
RH27 30K DP-55
Collector of High Voltage
RH27 & RH28
Def +10.5V
PAGE 02-05
ABL
Deflection PWB
To QH01
Output Transistor
ABL Pull-Up
Resistors
RH28 39K
[ Current Path ]
DH16
RD30EB4
RH31
6.8K
B+
9
C
10
CH14
RH32
180K
TH01
50P
CH21
3
As Brightness goes Up, ABL Voltage
goes Down. (Inverse Proportional)
CH18
RH24
43K
LH06
7
RH23
1
Gnd
To Focus
ABL
8
LH01
RH21
RH25 18K
DH15
HZ22-2L
DH13
To
Anodes
CH17
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H. Drive
IH01
OVP
7
DH14
RH26
RH09 CH10
XRay Protect
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